It turned out very well, certainly similar to the real thing even though I reduced the ABV to 4.5% as the original 6.5% was a bit too high for me really.
I only did an 11lt batch and used a organic orange and two organic grapefruits, just the rind and was careful not to add the pith as that would increase the bittering.
Added 10g of orange and grapefruit with 5 minutes of the boil left and then added 20g of grapefruit with the dry hop with 4 days to go before bottling.
The finished beer is similar and I can certainly taste the grapefruit hit, however it's not as much as the Elvis juice so next time i'm going to add more rind, cut up into thin strips to see if that will give an even bigger grapefruit sensation.
Hope that helps, any more questions just ask :thumb: